Cable railway



I (NoModel') A. R. PARKINSON.

CABLE RAILWAY.

atented May '7, 1889..

N PETERS. Fholn-blhupmphcr, Washin lun. I16.

UNITED STATES PATENT OFFICE.

ALLEN RODGERS PARKESON, OF MONONGAHELA CITY, PENNSYLVANIA.

CABLE RAILWAY.

SPECIFICATION forming part of Letters Patent No. 402,963, dated May 7, 1889.

Application filed February 7, 1889. Serial N 0. 298,954:- (No model.)

' specification.

Myinvention is directed to means for transferring a car from one propelling-cable to another at the intersection of traction or cable railways, wherein the propelling-cable is utilized as the motor for effecting such transfer; and the objects of my improvement are to provide for a minimum deflection of the propelling cable or cables in utilizing its power as a motor for driving an auxiliary transferring-cable; to provide a central motor for the auxiliary transferring-cable, operated by the propelling-cable to transmit the force of the latter from a central point at the intersection of the cables; to provide a transferring-cable arranged to extend into the intersecting cableconduits some distance in advance of their intersectiomand to extend therefrom in lines coincident with the central lines of the curves or turn-outs of the tracks at the four corners of the intersection; to provide a single transferring-cable in the conduit conforming to the four turn-outs of intersecting double or single tracks, so that a car entering a switch from any one of the intersecting tracks will move in the line of the transferring-cable, which operates alike at all the four curves; to provide, by a single auxiliary cable, for transferring a car moving in any direction toward the intersection of the tracks by the propelling force of one or more intersecting cables; to provide for transmitting the power of one or more cables to the transferring-cable by a looped. branch of the latter extending from one of its four projecting points to the central motor, and to provide for taking up the slack of the transferring-cable in its looped branch, so as to maintain tautness in its several curved propelling sides.

The following is a description of the drawings and of my invcntionas illustrated therein and as applied to the propelling-cables of intersecting street-railways, and known as underground cables.

In the drawings, Figure 1 represents in dotted diagram plan two parallel surface tracks intersecting two parallel surface tracks at right angles and their connecting curves or sidings, the conduit propelling-cables for each of the double tracks, and my improved transferring device arranged to operate with the grip without deflecting the propelling-cables from their right lines. Fig. 2 shows in side view the central motor or pulley for transferring the power of the propelling-cable to the transferring-cable, and Fig. 3 shows in side view the. tightening device for the transferring-cable.

Each surface track has the usual underground propelling-cable, and they cross in direct lines at their intersection-that is to say, these cables do not extend around the curves conforming to the turn=outs,but maintain their direct course at the intersection of tracks which have switch turn-outs for changing the course of a car from one track to another running at right angles.

The propelling-cables of the double track of one line are indicated at 1 1, and the propelling-cables of the double track of the intersecting line are indicated at 2 2, While the separate lines of tracks are indicated at 3 3 and 4 4, and their respective curves or turnouts connecting the several tracks are indicated at 5, one curve passing around each corner of the intersecting streets.

Guide-rollers 6 are arranged in curved lines around the curves of the conduits for the auxiliary or transferring cable 7, which curved lines and conduits register with the curved grip-slots and are parallel to the curved track portions 5 of the several surface tracks.

A large pulley, 8, is suitably jou'rnaled in the conduit at the center of the crossing or intersection of the double tracks, and the propelling-cables pass tangentially to said pulley at four opposite points of the same and in lines at a slight distance from the same. Four or more guide-rolls, 9, are arranged with their outer sides in a line about tangential to one side of the large pulley, and one-half of the number of said guide-rolls are arranged at one side of said pulley and the other half at the other side, The propelling-cable which is in a line with said guide-rolls is carso that the cables moving in opposite directions will be in sufficient frictional contact with the same to drive it with the required power.

In the drawings both of the propelling-cables 2 2, which are running parallel with each other and in opposite directions, are shown as brought in contact with this large pulley, and, if found expedient, all four of the cables maybe brought into frictional contact with said pulley; but it may be suflicient to have one only or two of the cables carried against the same. If the one pair of cables be driven at a different speed from the other pair, two pulleys of correspondingly diiferent diameters may be employed, both pulleys being secured together, one above the other.

A smaller pulley, 10, is secured to the large driving-pulley 8, and the auxiliary cable 7 is carried around said pulley, around ti ghtening guide-rolls 11 in pairs, which are journaled below the grip-slots of two of the intersecting tracks and slightly to one side of the respective cables, and from said guide-rolls over guide-rolls 6, said auxiliary cable thus forming a loop, 12, and. approximately a foursided figure which has curved sides and ends which project in the four lines of tracks forming and running into the crossing.

Guide-rolls 13 are placed to one side of the middles of the tracks in similar positions to the tightening guide-rolls 11, so as to support and guide the auxiliary or transferring cable to form the above-described figure. The tightening guide-rolls are provided with suitable means for adjusting them longitudinal of the tracks, one style of such means being illustrated in Fig. 3 of the drawings, in which the guide-rolls 11 are shown as journaled upon a block, 14, which slides in suitable gnideways, 15, and has a screw, 16, by means of which it maybe adjusted longitudinally in the line of the loop branch of the transferring-cable.

It will be evident that by adjusting the tightening guide-rolls away from the main or driving pulley the loop of the auxiliary cable, principally, and the entire auxiliary cable, generally, will be tightened.

The other operation of my improved cartransferring device will be easily understood by reference to Fig. 1 of the drawings, in which the direction of the travel of the pro pelling-cables is indicated by arrows.

A car coming from any direction toward the crossing may have its grip released from the propelling-cable and be switched into the curved track, around which it will be carried by the grip engaging the auxiliary cable to the cable running at right angles.

The auxiliary or transferring cable will travel with less speed than the main propel ling-cables on account of its being driven by the smaller pulley, 10, whch-is revolved, to-

gether with the larger driven pulley, 8, by the propelling cable or cables, as stated.

Strong frictional. resistance is obtained for the transferring-cable by its being carried around the central pulley, 10, and around the tightening guide-rolls 11., forming the loop 12, and the tension of the transferring-cables and the consequent frictionalresistance upon the pulley 10 may be adjusted and regulated by the adjustment of the tightening guiderolls.

By arranging the tightening guide-rolls at the end of the loop 12 of the transferring-cable any slack in said cable may be taken up by said rolls, thus preventing slack in the grip-operating parts of the transferring-cable.

By having the transferringcable traveling at less speed than the main cables the cars will travel around the curves with less speed than upon the straight tracks, so that there willbe no jarring of the car in. passing around the curves or danger of throwing them oil the track, and the loss in speed of the transferring-cable by transmission of power from a smaller pulley driven by power applied to a larger pulley will cause an increase in power which will overcome the resistance of the cars passing over the curves, so that said resistance will not increase the strain upon the propelling cable or cables.

As the cable or cables employed in driving the central pulley will be only slightly defiected from the straight line by the arrangement of the guide-rolls 9, they will suffer but slight strain and wear at such points.

I prefer to arrange the transferring-cable in a plane below the propelling-cables, as being more convenient for the action of the grip; but it may be arranged above the plane of the propelling-cables.

It will be understood that the guide-rolls for the propelling .and for the transferring cables may be of any suitable construction and disposed in such manner as will be best suited for the purpose.

The separate lines of track and their re spective switclncurves are indicated by dotted lines.

I claim as my improvement- 1. In combination with. the intersecting tracks and intersecting propelling-cables of a cable railway, a central driving-pulley arranged between the intersecting cables and engaged and driven by one or more of said cables, and a transferring-cable carried around curves between said intersecting tracks and formed into a loop carried around said central pulley, substantially as described.

2. In combination with the crossing or intersecting tracks and intersecting propellingcables of a cable railway, a pulley arranged between the said intersecting propelling-cables and driven by one or more of the latter, and a single tran st'erring-cable carried around the said central pulley and from thence by a series of pulleys in curves between and across the angles or corners corresponding with said intersecting tracks, and deriving its motion from said central pulley, whereby the latter and a single transferring-cable co-operate to transfer a car from one track to another at such intersection.

3. In combination with the crossing or intersecting tracks and propelling-cables of a cable railway and curved tracks crossing the angles between said tracks and connected to them by switches, a driving-pulley driven by one or more of said main cables, guide-rolls arranged around the curves corresponding with said curved tracks, and a transferringcable carried over said guide-rolls so as to terminate in the line of each propelling-cable, and deriving its motion from said drivingpulley, substantially as described.

4. In a cable railway, the combination, with the crossing or intersecting tracks 3 3 and 4: 4, the propelling intersecting cables 1 1 and 2 2, and the curved tracks 5, of the pulley 8 and smaller pulley, 10, deriving motion from one or more of said propelling-cables, the guiderolls 6, 11 and 13, and the transferring-cable 7, carried over said guide-rolls and around said pulley 10, substantially as described.

5. In a cable railway, the combination,with the crossing or intersecting tracks 3 3 and l 4, the propelling intersecting cables 1 1 and 2 2, and the curved tracks 5, of the pulley 8, deriving motion from one or more of said propelling-cables, and the smaller pulley, 10, the guide-rolls 6 and 13, the adjustable tightening guide-rolls 11, and the transferring-cable carried in a loop around said pulley 10 and tightening guide-rolls 11 and over the guiderolls 13 and 6, substantially as described.

6. In a cable railway, the combinationof the intersecting tracks and propelling-cables, the pulley 8, journaled in the center of said intersecting propelling-cables, the curved tracks, the guide-rolls 9, arranged in a line tangential to the pulley S and in a line with one of the propelling-cables and guiding said cable into frictional driving contact with a portion of the periphery of said pulley 8, and the transferring-cable passed around guide-rolls and deriving motion from said driven pulley 8, substantially as described.

7. In a cable railway, the combination of the intersecting double tracks 3 3 and 4 4, propelling intersecting cables 1 1 and2 2, curved tracks 5, pulley 8, guide-rolls 9 in a tangential line to the periphery of said pulley and guiding one or more of the main cables into frictional driving contact with said pulley 8, the smaller pulley, 10, secured to said pulley 8, the guide-rolls 6 and 13, the adjustable tightening-rolls 11, and the transferring-cable 7, carried in a loop, 12, around said pulley 10 and tightening guide-rolls 11 and carried over the guide-rolls 6 and 13, substantiallyas described.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

ALLEN RODGERS PARKESON.

lVitnesses:

JAMES BLYTHE, H. McOURnY.

Correction in Letters Patent No. 402,963.

It is hereby certified that the name of the patentee in Letters Patent No. 402,962 granted May 7, 1889, for an improvement in Gable-Railways, was erroneous] Written and printed Allen Rodgers Parkeson, and at the head of the drawin printed A. It. Parkinson, Whereas said name should have been Written and printe Allen Rodgers Parkison; and that the said Letters Patent should be read With th correction therein that the same may conform to the record of the case in the Pate.

Office.

Signed, countersigned, and sealed this 24th day of September, A. D. 1889.

[sEAL] CYRUS) BUSSEY,

Assistant Secretary ofthe Interim".

Oountersigned:

O. E. MITCHELL,

Coamnissioner of Patents. 

